Updates to 3rd party libraries

Add Dockerfile and specific docker-php.ini

inc/vendor/phpoffice/phpspreadsheet/tests/PhpSpreadsheetTests/Shared/CodePageTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Shared;
+
+use PhpOffice\PhpSpreadsheet\Exception;
+use PhpOffice\PhpSpreadsheet\Shared\CodePage;
+use PHPUnit\Framework\TestCase;
+
+class CodePageTest extends TestCase
+{
+    /**
+     * @dataProvider providerCodePage
+     *
+     * @param mixed $expectedResult
+     */
+    public function testCodePageNumberToName($expectedResult, ...$args)
+    {
+        $result = CodePage::numberToName(...$args);
+        self::assertEquals($expectedResult, $result);
+    }
+
+    public function providerCodePage()
+    {
+        return require 'data/Shared/CodePage.php';
+    }
+
+    public function testNumberToNameWithInvalidCodePage()
+    {
+        $invalidCodePage = 12345;
+
+        try {
+            CodePage::numberToName($invalidCodePage);
+        } catch (Exception $e) {
+            self::assertEquals($e->getMessage(), 'Unknown codepage: 12345');
+
+            return;
+        }
+        $this->fail('An expected exception has not been raised.');
+    }
+
+    public function testNumberToNameWithUnsupportedCodePage()
+    {
+        $unsupportedCodePage = 720;
+
+        try {
+            CodePage::numberToName($unsupportedCodePage);
+        } catch (Exception $e) {
+            self::assertEquals($e->getMessage(), 'Code page 720 not supported.');
+
+            return;
+        }
+        $this->fail('An expected exception has not been raised.');
+    }
+}